Improvement in mitering attachments for sawing-machines



UNITED STATES PATENT nron.

. ELBRIDGE Gr. HOLDEN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO JAMESJ. WATROUS, OF CINCINNATI, OHIO.

IMPROVEMENTIN MITERING ATTACHMENTS FOR SAWING-MACHINE S.

Specification forming part of Letters Patent No. 221,8] 8, datedNovember 18, 1879 application filed March 31, 1879.

To all whom it may concerto:

Be it known that I, ELBRIDGE G. HOLDEN, of Philadelphia, Pennsylvania,have invented anew and useful Improvement in Mitering Attachments forScroll-Sawing Machines, of which the following is a full, true, andexact description, referencebeing bad to the accompanying drawingsannexed hereto, and forming part of this specification.

The object of my invention is'to provide a mitering attachment forscroll sawing machines which may be easily attached to or detached fromthe sawtable, and which shall ena ble the operator to cut the edges ofwork to any desired angle, for the purpose'of constructing boxes,brackets, and similar work to any desired form.

To this end it consists in two guides, which may be stationary ormovable, forming, when placed in position together, a trough, throughwhich the saw operates and the work is fed to the saw, and twoadjustable side supports, by which the guides are supported at anydesired angle in relation to each other.

In the drawings herewith, Figure l is a per spective view of thesaw-table with my invention applied thereto. Fig. 2 is a front sectional elevation of the same. Fig. 3 is a front sectional elevation ofthe saw-table with the guides in position, with the supporting-blocksremoved. Fig. 4 is a plan view of the guides and connections forming thetrough.

A A are two strips or guides, preferably of wood, rounded at theircorresponding narrow edges, and provided at each end with suitablecatches a 1), preferably of metal, by which the strips are heldsufficiently apart to allow the saw to operate between them at anydesired angleto which they may be set, as hereinafter indicated.

The guides may be wedge-shaped, so that when placed flat upon the tabletheir upper surfaces incline toward each other at a shal low angle, thusserving for certain.classes of work without the additional supports. The

For the purpose of supporting the guides A at any desired angle inrelation to each other, I employ two side blocks, B, with correspondin gsides, formed into steps 0, of uniform height. The side blocks may beconstrhcted in two or more detachable parts, so as to be built up to anydesired height. The wedges or guides A being allowed to rest with theirlower edges upon the table on either side of the saw, their upper edgessupported upon either of the steps 0 of the supporting-blocks B,according to the angle desired.

The blocks B are clamped to the saw-table. and thus the parts aresecurely adjusted and being so adjusted and secured, the work is fedthrough the trough to the saw, or the guide-trough is fed along upon itssupporting- ,blocks with the work. i

I prefer to have the steps 0 of such dimen sion s that, as the guiding-plates are raised from one toanother, definite angles of cut will beproduced.

As a modification in the mode of adjusting the guide-plates A, curvedguides may be provided with a suitable slot for the passage ofset-screws, by which the plates may be held at any desired angle.

Having described my invention, what I claim, and desire to secure byLetters Patent,

l. A removable miter-trough for scroll-sawing machines, consisting oftwo guide-plates, A, upon'opposite sides ot'the saw, adjustable to anydesired angle, by means substantially as described, for the purposespecified.

2. In combination with the guide-plates A, forming a miter-trough forscroll-sawingma chines, the adjustable side supports, B, substantiallyas described, for the purpose specified.

3. In combination with the table of scrollsawing machines, the troughcomposed of guide-plates A, supported at the desired angle upon thestepped supports B, substantially as described, for the purposespecified.

In testimony whereof I have hereunto set my hand.

ELBRIDGE G. HOLDEN. Witnesses:

L. M. HOSEA,

E. A. ELLSWORTH.

